It is known as the Medical Information Bureau and can be found at https://www.mib.com/. And, you may want to read the article at http://www.cincinnati.com/story/money/20.../10511853/
If you want to see what insurers (life, medical, etc.) may have reported, request your consumer report at no cost. You fill-out some identifying information using a secure web-connection and they send you a report in about fifteen days.
It can't hurt and you may be able to request corrections of any errors that may have slipped in.